A single-tower multi-stage biological deodorization tower capable of spraying in different zones and a deodorization control method thereof

Abstract

The present invention belongs to the field of environmental protection technology, and discloses a single-tower multi-stage biological deodorization tower capable of partition spraying and a deodorization control method thereof, wherein the biological deodorization tower comprises: a tower body, a circulating water tank is provided at the bottom of the inner side of the tower body, a total air inlet pipe is connected to the upper space of the circulating water tank, and a total air outlet pipe is connected to the top of the tower body; a biological spray deodorization module, N-level biological spray deodorization modules are arranged in the tower body from bottom to top in pairs, so as to form (N-1) intervals between the N-level biological spray deodorization modules, N≥2 and an integer; a water-gas two-phase separation module, (N-1)-level water-gas two-phase separation modules are arranged in (N-1) intervals from bottom to top; the spray liquid of the 1-level biological spray deodorization module located at the top of the total air inlet pipe is supplied by the circulating water tank, and the spray liquid of the 2-level to N-level biological spray deodorization modules is supplied by the water-gas two-phase separation modules arranged in the lower interval adjacent thereto. The present invention simultaneously and efficiently removes two odors of different properties.

Description

Technical Field

[0001] The invention belongs to the technical field of environmental protection, and more specifically, relates to a single-tower multi-stage biological deodorization tower capable of spraying in different zones and a deodorization control method thereof. Background Art

[0002] Biological deodorization towers are widely used in the field of odor pollution prevention and control due to their advantages such as high deodorization efficiency, low operating cost, green energy saving, and no secondary pollution. The working principle of the biological deodorization tower is that the microorganisms attached to and grown on the deodorization tower filler use odor pollutants as nutrients. At the same time, the circulating spray system provides them with suitable temperature and humidity, and trace elements necessary for growth. The microorganisms decompose the odor pollutants into inorganic small molecules such as carbon dioxide and water, and the energy released is used for their own growth and reproduction, thereby achieving the purpose of continuously removing odor pollutants. The residence time of the biological deodorization tower is one of the important parameters in its design. The growth and reproduction of microorganisms requires a certain generation time. If the residence time is insufficient, the deodorizing microorganisms will not be able to continue to grow and reproduce on the filler, and ultimately the biological deodorization tower will not be able to start film formation. Therefore, compared with deodorization equipment using chemical washing, activated carbon adsorption, and ion photolysis, the significant disadvantage of the biological deodorization tower is that it occupies a large area and has a high one-time construction cost.

[0003] Under the current situation of tight land use for engineering construction, the mainstream approach to saving land is to make the interior of the biological deodorization tower into a double-layer packing structure to increase the residence time. The spray water required for the double-layer packing is stored in the circulating water tank at the bottom of the tower body. Although this solution can reduce the floor space occupied by the equipment, it also has major defects: since the double-layer packing shares the circulating water tank at the bottom of the tower body, this inevitably requires that the microbial populations attached to and growing on the surface of each packing layer of the double-layer packing structure must be basically the same, which in turn leads to the inability to simultaneously and efficiently remove two odor pollutants of different properties in the biological deodorization tower. For example, hydrogen sulfide has a better removal effect in an acidic environment, while toluene and xylene have the best removal efficiency in a neutral to alkaline environment.

[0004] In addition, whether it is the high concentration of hydrogen sulfide, ammonia, methyl mercaptan, etc. in municipal odor pollutants, or benzene, ethers, alcohols, etc. that may be contained in chemical plant odor pollutants, a single-stage biological deodorization tower will inevitably be difficult to meet the current strict emission standards, and often requires two or more biological deodorization towers in series to meet the requirements of emission standards. At the same time, municipal odor shows obvious seasonal changes. The temperature is low in winter, and the concentration of odor components in the odor is low. Often a single-stage biological tower can be used to treat and meet emission standards; and industrial waste gas often changes production lines or production raw materials due to changes in market demand, and the amount of odor or odor concentration in odor pollutants also changes accordingly. The number of biological deodorization towers in series also changes accordingly, resulting in a large energy loss. It can be seen that the current number of biological deodorization towers in series cannot be automatically changed according to actual working conditions, which is not conducive to energy saving and consumption reduction.

[0005] Therefore, there is an urgent need to provide a single-tower multi-stage biological deodorization tower capable of zoned spraying and a deodorization control method thereof, so as to solve the technical problems in the prior art that the biological deodorization tower system occupies a large area, has a high one-time construction cost, cannot simultaneously and efficiently remove two odorous pollutants of different properties, and the number of series-connected biological deodorization towers cannot be automatically changed according to actual working conditions, which is not conducive to energy saving and consumption reduction. Summary of the invention

[0006] The main purpose of the present invention is to propose a single-tower multi-stage biological deodorization tower capable of zoned spraying and a deodorization control method thereof, aiming to solve at least one of the technical problems that the existing biological deodorization tower system occupies a large area, has a high one-time construction cost, cannot simultaneously and efficiently remove two odor pollutants of different properties, and the number of series-connected biological deodorization towers cannot be automatically changed according to actual working conditions, which is not conducive to energy saving and consumption reduction.

[0007] To achieve the above objectives, in a first aspect, the present invention provides a single-tower multi-stage biological deodorization tower capable of spraying in different zones, the biological deodorization tower comprising:

[0008] A tower body, wherein a circulating water tank is provided at the bottom of the inner side of the tower body, the upper space of the circulating water tank is connected to a main air inlet pipe, and the top of the tower body is connected to a main air outlet pipe;

[0009] Biological spray deodorization modules, wherein the biological spray deodorization modules of the N levels are arranged in pairs from bottom to top in the tower body to form (N-1) intervals between the biological spray deodorization modules of the N levels, where N is ≥ 2 and is an integer;

[0010] The water-gas two-phase separation module, the (N-1)-level water-gas two-phase separation modules are respectively arranged in the (N-1) compartments from bottom to top; wherein,

[0011] The spray liquid of the 1st-stage biological spray deodorization module located at the upper part of the main air inlet pipe is supplied by the circulating water tank, and the spray liquid of the 2nd to Nth-stage biological spray deodorization modules are respectively supplied by the water-gas two-phase separation modules arranged in the lower interval area adjacent thereto, and the (N-1) interval areas are respectively connected to branch air outlet pipes, and the (N-1) branch air outlet pipes are connected to the main air outlet pipe after being merged.

[0012] Preferably, the biological spray deodorization module comprises: a packing unit, a spray unit, and a demisting unit, wherein the spray unit is arranged on the upper part of the packing unit, and the demisting unit is located on the upper part of the spray unit.

[0013] Preferably, the spray unit of the 1st-level biological spray deodorization module is connected to the circulating water tank via the 1st-level circulation pipeline; the spray units of the 2nd to Nth-level biological spray deodorization modules are respectively connected to the water-gas two-phase separation modules correspondingly arranged in the lower interval areas adjacent to the 2nd to Nth-level biological spray deodorization modules via the 2nd to Nth-level circulation pipelines.

[0014] Preferably, one end of the 1st to Nth level circulation pipeline flowing into the tower body passes through the tower body respectively, and is respectively connected to the spray unit fluid of the Nth level biological spray deodorization module, and a spray pump and a spray electric valve are also respectively provided on the 1st to Nth level circulation pipeline.

[0015] Preferably, the water-gas two-phase separation module comprises: a water collecting tank and a first water outlet pipe, the water collecting tank is funnel-shaped and connected to one end of the first water outlet pipe, and the other end of the first water outlet pipe is fixedly connected to the inner wall of the tower body.

[0016] Preferably, the 2nd to Nth level circulation pipelines are respectively provided with external water tanks, and one end of the portion of the 2nd to Nth level circulation pipeline located on the inlet side of each external water tank passes through the tower body and is connected to the first water outlet pipe of the correspondingly arranged water-gas two-phase separation module.

[0017] Preferably, a vertical baffle is provided on the outer periphery of the upper end of the water collecting tank of the water-gas two-phase separation module, and the baffle includes a circumferential fixed baffle and a circumferential movable baffle, the circumferential fixed baffle is located on the inner side of the circumferential movable baffle, and the lower end of the circumferential movable baffle is connected to the telescopic part, and the circumferential movable baffle can be moved up and down along the outer side of the circumferential fixed baffle by the drive of the telescopic part.

[0018] Preferably, the water-gas two-phase separation module also includes a retaining ring, which is arranged above the water collecting tank. The outer side of the retaining ring is fixed to the inner wall of the tower body. The distance between the inner edge of the retaining ring and the inner wall of the tower body is greater than the distance between the inner side of the circumferentially movable baffle and the inner wall of the tower body. The circumferentially movable baffle can be driven by the telescopic part to contact or move away from the retaining ring. When the circumferentially movable baffle contacts the retaining ring, the fluid passages above and below the retaining ring are blocked.

[0019] Preferably, the retaining ring body is provided with a circumferential groove, a sealing ring is arranged in the groove, and the circumferential movable baffle can contact the sealing ring by being driven by a telescopic member, and the telescopic member is remotely controlled by a controller.

[0020] In a second aspect, the present invention proposes a deodorization control method according to the aforementioned single-tower multi-stage biological deodorization tower capable of zoned spraying, the deodorization control method comprising:

[0021] Step S1: Calculate the theoretical number of stages M0 of the biological spray deodorization module required for the biological deodorization tower based on the air volume and odor concentration of the main air intake pipe at time t0, where M0 ≥ 1 and is an integer;

[0022] Step S2: if M0=1, control the circumferential movable baffle on the outer periphery of the upper end of the water collecting tank of the first-stage water-gas two-phase separation module to contact the sealing ring in the circumferential groove of the baffle ring above it;

[0023] If 1<M0<N, the circumferential movable baffles on the outer periphery of the upper end of the water collecting tank of the water-gas two-phase separation modules of the 1st to (M0-1)th levels are controlled to be away from the circumferential groove of the retaining ring above them, and at the same time, the circumferential movable baffles on the outer periphery of the upper end of the water collecting tank of the water-gas two-phase separation module of the M0th level are controlled to contact the sealing ring in the circumferential groove of the retaining ring above them;

[0024] If M0=N, the circumferential movable baffle on the outer periphery of the upper end of the water collecting tank of the water-gas two-phase separation module of the 1st to (N-1)th stage is controlled to be away from the circumferential groove of the retaining ring above it;

[0025] If M0>N, the air volume of the total air intake pipe is adjusted so that the theoretical number of stages of the instant biological spray deodorization module required by the biological deodorization tower does not exceed the actual number of stages N of the biological spray deodorization module of the biological deodorization tower;

[0026] Step S3: Calculate the theoretical number of stages M1 of the biological spray deodorization module required for the biological deodorization tower based on the air volume and odor concentration fluctuation of the total air intake pipe at time t1, where M1≥1 and is an integer;

[0027] Step S4: If M1=M0, the biological deodorization tower maintains the current operating state;

[0028] If 1<M0<M1<N, the circumferential movable baffles on the outer periphery of the upper end of the water collecting tank of the water-gas two-phase separation modules of the M0 level to the (M1-1) level are controlled to be away from the circumferential groove of the retaining ring above them, and the circumferential movable baffles on the outer periphery of the upper end of the water collecting tank of the water-gas two-phase separation module of the M1 level are controlled to contact the sealing ring in the circumferential groove of the retaining ring above them;

[0029] If 1<M1<M0<N, the circumferential movable baffle on the outer periphery of the upper end of the water collecting tank of the water-gas two-phase separation module of the M1 level to the (M0-1) level is controlled to contact the sealing ring in the circumferential groove of the baffle ring above it;

[0030] If 1<M0<N<M1, the air volume of the main air intake pipe is adjusted so that the theoretical number of stages of the instant biological spray deodorization module required by the biological deodorization tower does not exceed the actual number of stages N of the biological spray deodorization module of the biological deodorization tower;

[0031] If 1=M1<M0<N, the circumferential movable baffle on the outer periphery of the upper end of the water collecting tank of the first-stage water-gas two-phase separation module is controlled to contact the sealing ring in the circumferential groove of the baffle ring above it;

[0032] Step S5: Repeat steps S3-S4 until deodorization is completed.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] (1) The present invention provides a single-tower multi-stage biological deodorization tower capable of zoned spraying and a deodorization control method thereof, wherein the biological deodorization tower comprises: a biological spray deodorization module, wherein N-stage biological spray deodorization modules are arranged in pairs from bottom to top in the tower body to form (N-1) intervals between the N-stage biological spray deodorization modules, where N ≥ 2 and is an integer; a water-gas two-phase separation module, wherein the (N-1)-stage water-gas two-phase separation modules are arranged in (N-1) intervals from bottom to top; the spray liquid of the 1-stage biological spray deodorization module located at the top of the main air inlet pipe is supplied by a circulating water tank, and the spray liquid of the 2-stage to N-stage biological spray deodorization modules is respectively supplied by the water-gas two-phase separation modules arranged in the adjacent lower intervals. Through the design of the above-mentioned biological spray deodorization module and water-gas two-phase separation module, the single-tower multi-stage biological deodorization tower system occupies a smaller area, the one-time construction cost is greatly reduced, and it can simultaneously and efficiently remove two or more odor pollutants of different properties;

[0035] (2) The present invention provides a single-tower multi-stage biological deodorization tower capable of zoned spraying and a deodorization control method thereof, wherein the water-gas two-phase separation module further comprises a retaining ring, the retaining ring is arranged above the water collecting tank, the outer side of the retaining ring is fixedly connected to the inner wall of the tower body, the distance between the inner edge of the retaining ring and the inner wall of the tower body is greater than the distance between the inner side of the circumferential movable baffle and the inner wall of the tower body, the circumferential movable baffle can contact or move away from the retaining ring by the drive of the telescopic member, and when the circumferential movable baffle contacts the retaining ring, the fluid passages above and below the retaining ring are blocked. Therefore, the present invention can instantly adjust the number of stages of the biological spray deodorization module and the water-gas two-phase separation module according to the specific working conditions, while ensuring the deodorization effect and taking into account energy saving and consumption reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the structure of a single-tower multi-stage biological deodorizing tower capable of spraying in different zones according to the present invention;

[0037] Figure 2 It is a partially enlarged view of a water-gas two-phase separation module of a single-tower multi-stage biological deodorization tower capable of zoned spraying according to the present invention. DETAILED DESCRIPTION

[0038] Various aspects of the present invention are described in further detail below.

[0039] Unless otherwise defined or indicated, all professional and scientific terms used herein have the same meanings as those familiar to users skilled in the art. In addition, any methods and materials similar or equivalent to those described herein can be applied to the method of the present invention.

[0040] Unless otherwise clearly specified and limited, the "or" mentioned in the present invention includes the relationship of "and". The "and" is equivalent to the Boolean logic operator "AND", the "or" is equivalent to the Boolean logic operator "OR", and "AND" is a subset of "OR".

[0041] It is to be understood that although the terms "first", "second", etc. may be used herein to describe different elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. Therefore, a first element may be referred to as a second element without departing from the teachings of the present disclosure.

[0042] In the present invention, the terms "consisting mainly of" and "consisting of" are included in the terms "containing", "including" or "comprising".

[0043] Unless otherwise clearly specified and limited, the terms "connected", "connected" and "connected" in the present invention should be understood in a broad sense, for example, it can be a fixed connection, or it can be connected through an intermediary medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technical users in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] For example, if an element (or component) is referred to as being on, coupled to, or connected to another element, the element may be directly formed on, coupled to, or connected to the other element, or there may be one or more intervening elements between them. In contrast, if the expressions "directly on," "directly coupled to," and "directly connected to" are used herein, then no intervening elements are indicated. Other words used to describe the relationship between elements should be similarly interpreted, such as "between" and "directly between," "attached" and "directly attached," "adjacent" and "directly adjacent," etc.

[0045] It should also be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings. The words "inner" and "outer" used refer to directions toward or away from the geometric center of a particular component, respectively. It can be understood that these terms are used here to describe the relationship of one element, layer or region relative to another element, layer or region as shown in the drawings. In addition to the orientations described in the drawings, these terms should also include other orientations of the device.

[0046] Other aspects of the present invention will be apparent to users skilled in the art in view of the disclosure herein.

[0047] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For users of ordinary skills in the field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0048] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present disclosure. The drawings only show the components related to the present application and are not drawn according to the number, shape and size of the components in actual implementation. The type, quantity and proportion of each component in actual implementation may be changed arbitrarily, and the component layout may also be more complicated. For example, the thickness of the components in the drawings may be exaggerated for the sake of clarity.

[0049] Example 1

[0050] The existing biological deodorization tower system occupies a large area and has a high one-time construction cost. It is unable to efficiently remove two odor pollutants of different properties at the same time. In addition, the number of biological deodorization towers in series cannot be automatically changed according to actual working conditions, which is not conducive to energy saving and consumption reduction.

[0051] In order to solve the technical problems in the above-mentioned prior art, firstly, as shown in the attached Figure 1 As shown, the present invention proposes a single-tower multi-stage biological deodorization tower capable of spraying in different zones, and the biological deodorization tower comprises:

[0052] A tower body 1, wherein a circulating water tank 11 is provided at the inner bottom of the tower body 1, the upper space of the circulating water tank 11 is connected to a main air inlet pipe 3, and the top of the tower body 1 is connected to a main air outlet pipe 4;

[0053] Biological spray deodorization modules, wherein the biological spray deodorization modules of the second level are arranged in the tower body from bottom to top to form a spacing area between the biological spray deodorization modules of the second level;

[0054] Water-gas two-phase separation module, level 1 The water-gas two-phase separation module is arranged in the spacer area; wherein,

[0055] The spray liquid of the first-stage biological spray deodorization module located at the top of the main air inlet pipe 3 is supplied by the circulating water tank 11, and the spray liquid of the second-stage biological spray deodorization module is supplied by the water-gas two-phase separation module arranged in the lower interval area adjacent to it. The interval area is connected to a branch air pipe, and the branch air pipe is connected to the main air outlet pipe 4.

[0056] As a preferred embodiment, the main air intake pipe 3 is provided with an air intake online detection instrument 31 and an air intake air valve 32. The online detection instrument 31 is used to detect the air intake volume and odor concentration. The air intake air valve 32 can adjust the air intake volume entering the tower body 1 through the main air intake pipe 3. It should be noted that the processing load of the biological deodorization tower is strongly related to the air intake volume and odor concentration.

[0057] As a preferred embodiment, the main air outlet pipe 4 is provided with an online air outlet monitoring instrument 43 and a main air outlet electric air valve 44, the branch air outlet pipe is provided with a first-level outlet electric air valve 41, and the main air outlet pipe 4 is also provided with a second-level outlet electric air valve 42 near the top of the tower body.

[0058] As a preferred embodiment, the 1st-level biological spray deodorization module includes: a 1st-level filler unit 12, a 1st-level spray unit 13, and a 1st-level demisting unit 14, wherein the 1st-level spray unit is arranged on the upper part of the 1st-level filler unit, and the 1st-level demisting unit is located on the upper part of the 1st-level spray unit; the 2nd-level biological spray deodorization module includes: a 2nd-level filler unit 16, a 2nd-level spray unit 17, and a 2nd-level demisting unit 18, wherein the 2nd-level spray unit is arranged on the upper part of the 2nd-level filler unit, and the 2nd-level demisting unit is located on the upper part of the 2nd-level spray unit.

[0059] As a preferred embodiment, the first-level spray unit 13 of the first-level biological spray deodorization module is connected to the circulating water tank 11 via the first-level circulation pipeline; the second-level spray unit of the second-level biological spray deodorization module is connected to the water-gas two-phase separation module correspondingly arranged in the lower interval area adjacent to the second-level biological spray deodorization module via the second-level circulation pipeline.

[0060] As a preferred embodiment, one end of the 1st-to-2nd level circulation pipeline flowing into the tower body 1 passes through the tower body and is fluidly connected to the 1st-level spray unit 13 and the 2nd-level spray unit 17 respectively. The 1st-level circulation pipeline is also provided with a first spray pump 110 and a first spray electric valve 19 respectively, and the 2nd-level circulation pipeline is also provided with a second spray pump 22 and a second spray electric valve 21 respectively.

[0061] As a preferred embodiment, the water-gas two-phase separation module includes: a water collecting tank 156, a first water outlet pipe, the water collecting tank 156 is funnel-shaped and connected to one end of the first water outlet pipe, and the other end of the first water outlet pipe is fixed to the inner wall of the tower body 1. It should be noted that the water collecting tank 156 is in a trumpet-shaped funnel shape, and the outer wall of the water collecting tank 156 is coated with an adhesive layer 1511, and the trumpet-shaped funnel-shaped clamping cavity 159 is sleeved on the outer wall of the water collecting tank 156 through the adhesive layer 1511.

[0062] As a preferred embodiment, an external water tank 2 is also provided on the second-stage circulation pipeline. One end of the portion 157 of the second-stage circulation pipeline located on the inlet side of the external water tank passes through the tower body 1 and is connected to the first water outlet pipe of the corresponding water-gas two-phase separation module. The connection method can be welding, flange connection and other commonly used connection methods in the mechanical field.

[0063] As a preferred embodiment, a vertical baffle is arranged on the outer periphery of the upper end of the water collecting tank 156 of the water-gas two-phase separation module, and the baffle includes a circumferential fixed baffle 155 and a circumferential movable baffle 153, the circumferential fixed baffle 155 is located on the inner side of the circumferential movable baffle 153, and the lower end of the circumferential movable baffle 153 is connected to the telescopic member 154, and the circumferential movable baffle 153 can be driven by the telescopic member 154 to move up and down along the outer side of the circumferential fixed baffle 155.

[0064] As a preferred embodiment, as shown in the attached Figure 2 As shown, the water-gas two-phase separation module also includes a retaining ring 151, which is arranged above the water collecting tank 156. The outer side of the retaining ring 151 is fixed to the inner wall of the tower body 1, and the distance between the inner edge of the retaining ring 151 and the inner wall of the tower body 1 is greater than the distance between the inner side of the circumferentially movable baffle 153 and the inner wall of the tower body 1. The circumferentially movable baffle 153 can be driven by the telescopic member 154 to contact or move away from the retaining ring 151. When the circumferentially movable baffle 153 contacts the retaining ring 151, the fluid passages at the upper and lower parts of the retaining ring 151 are blocked.

[0065] It should be noted that the retaining ring 151 is an annular retaining ring, the outer side of which is welded to the inner wall of the tower body 1, and the vertical cross section of the retaining ring 151 is triangular. When the circumferential movable baffle 153 is driven away from the retaining ring 151 by the telescopic member 154, an annular airway is formed between the retaining ring 151 and the circumferential movable baffle 153, and the instantaneous flow of the annular airway is coupled to the distance between the circumferential movable baffle 153 and the retaining ring 151. The odor entering the tower body 1 from the main air intake pipe 3 passes through the first-stage packing unit 12 and then enters the upper second-stage packing unit 16 through the annular airway. The setting of the packing unit can increase the residence time of the odor and further degrade the odor pollutants. By analogy, the larger the number of packing units, the better the theoretical effect of odor purification.

[0066] It should be noted that the telescopic member 154 can be configured as a spring group consisting of a plurality of springs arranged circumferentially, wherein one end of the plurality of springs in the spring group away from the circumferential movable baffle 153 is fixed, and one end adjacent to the circumferential movable baffle 153 is fixed by a traction rope, the number of the traction ropes corresponds to the number of the plurality of springs, and the traction rope can be retracted to control the extension and retraction of the plurality of springs, thereby driving the circumferential movable baffle 153 to contact or move away from the retaining ring 151. The traction rope and its retraction mechanism are both arranged in the trumpet-shaped funnel-shaped clamping cavity 159. The action of the retraction mechanism is remotely controlled by the controller 158.

[0067] As a preferred embodiment, the retaining ring 151 body is provided with a circumferential groove 152 , a sealing ring is arranged in the groove, and the circumferential movable baffle 153 can contact the sealing ring 1510 through the driving of the telescopic member 154 .

[0068] Example 2

[0069] The single-tower multi-stage biological deodorization tower capable of zoned spraying in Example 2 is generally similar in structure to the biological deodorization tower in Example 1, except that the number of stages of the biological spray deodorization module is N, where N ≥ 2 and is an integer. Accordingly, in this embodiment, the number of stages of the water-gas two-phase separation module and the circulation pipeline also needs to be adaptively adjusted.

[0070] Example 3

[0071] In a second aspect, the present invention provides a deodorization control method for a single-tower multi-stage biological deodorization tower capable of zoned spraying according to Embodiment 1 or 2, the deodorization control method comprising:

[0072] Step S1: Calculate the theoretical number of stages M0 of biological spray deodorization modules required for the biological deodorization tower based on the air volume and odor concentration of the main air inlet pipe 3 at time t0, where M0 ≥ 1 and is an integer;

[0073] Step S2: if M0=1, the circumferential movable baffle 153 on the upper outer periphery of the water collecting tank 156 of the first-stage water-gas two-phase separation module is controlled to contact the sealing ring 1510 in the circumferential groove 152 of the retaining ring 151 above it;

[0074] If 1<M0<N, the circumferential movable baffle 153 on the outer periphery of the upper end of the water collecting groove 156 of the water-gas two-phase separation module of the 1st to (M0-1)th level is controlled to be away from the circumferential groove 152 of the retaining ring 151 above it, and at the same time, the circumferential movable baffle 153 on the outer periphery of the upper end of the water collecting groove 156 of the water-gas two-phase separation module of the M0th level is controlled to contact the sealing ring 1510 in the circumferential groove 152 of the retaining ring 151 above it;

[0075] If M0=N, the circumferential movable baffle 153 on the upper outer periphery of the water collecting tank 156 of the 1st to (N-1)th stage water-gas two-phase separation modules is controlled to be away from the circumferential groove 152 of the retaining ring 151 above it;

[0076] If M0>N, the air volume of the main air inlet pipe 3 is adjusted so that the theoretical number of stages of the instant biological spray deodorization module required by the biological deodorization tower does not exceed the actual number of stages N of the biological spray deodorization module of the biological deodorization tower;

[0077] Step S3: Calculate the theoretical number of stages M1 of the biological spray deodorization module required for the biological deodorization tower based on the air volume and odor concentration fluctuation of the main air intake pipe 3 at time t1, where M1≥1 and is an integer;

[0078] Step S4: If M1=M0, the biological deodorization tower maintains the current operating state;

[0079] If 1<M0<M1<N, the circumferential movable baffle 153 on the outer periphery of the upper end of the water collecting groove 156 of the water-gas two-phase separation modules of the M0 level to the (M1-1) level is controlled to be away from the circumferential groove 152 of the retaining ring 151 above it, and at the same time, the circumferential movable baffle 153 on the outer periphery of the upper end of the water collecting groove 156 of the water-gas two-phase separation module of the M1 level is controlled to contact the sealing ring 1510 in the circumferential groove 152 of the retaining ring 151 above it;

[0080] If 1<M1<M0<N, the circumferential movable baffle 153 on the upper outer periphery of the water collecting tank 156 of the water-gas two-phase separation module of the M1 level to the (M0-1) level is controlled to abut against the sealing ring 1510 in the circumferential groove 152 of the baffle 151 above it;

[0081] If 1<M0<N<M1, the air volume of the main air intake pipe is adjusted so that the theoretical number of stages of the instant biological spray deodorization module required by the biological deodorization tower does not exceed the actual number of stages N of the biological spray deodorization module of the biological deodorization tower;

[0082] If 1=M1<M0<N, the circumferential movable baffle 153 on the upper outer periphery of the water collecting tank 156 of the first-stage water-gas two-phase separation module is controlled to contact the sealing ring 1510 in the circumferential groove 152 of the retaining ring 151 above it;

[0083] Step S5: Repeat steps S3-S4 until deodorization is completed.

[0084] Based on the present invention, technical users in the field should understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0085] It should be noted that the above embodiments can be freely combined as needed. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technical users in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

[0086] All documents mentioned in the present invention are cited as references in this application, just as each document is cited as reference separately. In addition, it should be understood that after reading the above content of the present invention, users of this field of technology can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. A single-tower multi-stage biological deodorization tower capable of spraying in different zones, characterized in that: The biological deodorization tower comprises: A tower body, wherein a circulating water tank is provided at the bottom of the inner side of the tower body, the upper space of the circulating water tank is connected to a main air inlet pipe, and the top of the tower body is connected to a main air outlet pipe; Biological spray deodorization modules, wherein the biological spray deodorization modules of the N levels are arranged in pairs from bottom to top in the tower body to form (N-1) intervals between the biological spray deodorization modules of the N levels, where N is ≥ 2 and is an integer; The water-gas two-phase separation module, the (N-1)-level water-gas two-phase separation modules are respectively arranged in the (N-1) compartments from bottom to top; wherein, The spray liquid of the 1st-stage biological spray deodorization module located at the upper part of the main air inlet pipe is supplied by the circulating water tank, and the spray liquid of the 2nd to Nth-stage biological spray deodorization modules are respectively supplied by the water-gas two-phase separation modules arranged in the lower compartments adjacent thereto, and the (N-1) compartments are respectively connected with branch outlet pipes, and the (N-1) branch outlet pipes are connected to the main air outlet pipe after being merged; The water-gas two-phase separation module includes: a water collecting tank, a first water outlet pipe, and a retaining ring. The water collecting tank is funnel-shaped and connected to one end of the first water outlet pipe, and the other end of the first water outlet pipe is fixedly connected to the inner wall of the tower body. A vertical baffle is arranged on the outer periphery of the upper end of the water collecting tank, and the baffle includes a circumferential fixed baffle and a circumferential movable baffle, and the circumferential fixed baffle is located on the inner side of the circumferential movable baffle. The retaining ring is arranged above the water collecting tank, and the outer side of the retaining ring is fixedly connected to the inner wall of the tower body. The distance between the inner edge of the retaining ring and the inner wall of the tower body is greater than the distance between the inner side of the circumferential movable baffle and the inner wall of the tower body. The circumferential movable baffle can contact or move away from the retaining ring. When the circumferential movable baffle contacts the retaining ring, the fluid passages at the upper and lower parts of the retaining ring are blocked.

2. A single-tower multi-stage biological deodorization tower capable of zoned spraying according to claim 1, characterized in that: The biological spray deodorization module comprises: a filling unit, a spray unit, and a demisting unit. The spray unit is arranged on the upper part of the filling unit, and the demisting unit is located on the upper part of the spray unit.

3. A single-tower multi-stage biological deodorization tower capable of zoned spraying according to claim 2, characterized in that: The spray unit of the 1st-level biological spray deodorization module is connected to the circulating water tank via the 1st-level circulation pipeline; the spray units of the 2nd to Nth-level biological spray deodorization modules are respectively connected to the water-gas two-phase separation modules correspondingly arranged in the lower interval areas adjacent to the 2nd to Nth-level biological spray deodorization modules via the 2nd to Nth-level circulation pipelines.

4. A single-tower multi-stage biological deodorization tower capable of zoned spraying according to claim 3, characterized in that: One end of the inflow tower body of the 1st to Nth level circulation pipeline passes through the tower body and is respectively connected to the spray unit fluid of the Nth level biological spray deodorization module. A spray pump and a spray electric valve are also respectively provided on the 1st to Nth level circulation pipeline.

5. A single-tower multi-stage biological deodorization tower capable of zoned spraying according to claim 4, characterized in that: The lower end of the circumferentially movable baffle is connected to the telescopic member, and the circumferentially movable baffle can be driven by the telescopic member to move up and down along the outer side of the circumferentially fixed baffle so that the circumferentially movable baffle contacts or moves away from the retaining ring.

6. A single-tower multi-stage biological deodorization tower capable of zoned spraying according to claim 5, characterized in that: The retaining ring body is provided with a circumferential groove, a sealing ring is arranged in the groove, and the circumferential movable baffle can contact the sealing ring through the driving of the telescopic member, and the telescopic member is remotely controlled by a controller.

7. A single-tower multi-stage biological deodorization tower capable of zoned spraying according to claim 6, characterized in that: The 2nd to Nth level circulation pipelines are also respectively provided with external water tanks, and one end of the 2nd to Nth level circulation pipelines located on the inlet side of each external water tank passes through the tower body and is connected to the first water outlet pipe of the correspondingly arranged water-gas two-phase separation module.

8. A deodorization control method for a single-tower multi-stage biological deodorization tower capable of zoned spraying according to any one of claims 6 to 7, the deodorization control method comprising: Step S1: Calculate the theoretical number of stages M0 of the biological spray deodorization module required for the biological deodorization tower based on the air volume and odor concentration of the main air intake pipe at time t0, where M0 ≥ 1 and is an integer; Step S2: if M0=1, control the circumferential movable baffle on the outer periphery of the upper end of the water collecting tank of the first-stage water-gas two-phase separation module to contact the sealing ring in the circumferential groove of the baffle ring above it; If 1<M0<N, the circumferential movable baffles on the outer periphery of the upper end of the water collecting tank of the water-gas two-phase separation modules of the 1st to (M0-1)th levels are controlled to be away from the circumferential groove of the retaining ring above them, and at the same time, the circumferential movable baffles on the outer periphery of the upper end of the water collecting tank of the water-gas two-phase separation module of the M0th level are controlled to contact the sealing ring in the circumferential groove of the retaining ring above them; If M0=N, the circumferential movable baffle on the outer periphery of the upper end of the water collecting tank of the water-gas two-phase separation module of the 1st to (N-1)th stage is controlled to be away from the circumferential groove of the retaining ring above it; If M0>N, the air volume of the total air intake pipe is adjusted so that the theoretical number of stages of the instant biological spray deodorization module required by the biological deodorization tower does not exceed the actual number of stages N of the biological spray deodorization module of the biological deodorization tower; Step S3: Calculate the theoretical number of stages M1 of the biological spray deodorization module required for the biological deodorization tower based on the air volume and odor concentration fluctuation of the total air intake pipe at time t1, where M1≥1 and is an integer; Step S4: If M1=M0, the biological deodorization tower maintains the current operating state; If 1<M0<M1<N, the circumferential movable baffles on the outer periphery of the upper end of the water collecting tank of the water-gas two-phase separation modules of the M0 level to the (M1-1) level are controlled to be away from the circumferential groove of the retaining ring above them, and the circumferential movable baffles on the outer periphery of the upper end of the water collecting tank of the water-gas two-phase separation module of the M1 level are controlled to contact the sealing ring in the circumferential groove of the retaining ring above them; If 1<M1<M0<N, the circumferential movable baffle on the outer periphery of the upper end of the water collecting tank of the water-gas two-phase separation module of the M1 level to the (M0-1) level is controlled to contact the sealing ring in the circumferential groove of the baffle ring above it; If 1<M0<N<M1, the air volume of the main air intake pipe is adjusted so that the theoretical number of stages of the instant biological spray deodorization module required by the biological deodorization tower does not exceed the actual number of stages N of the biological spray deodorization module of the biological deodorization tower; If 1=M1<M0<N, the circumferential movable baffle on the outer periphery of the upper end of the water collecting tank of the first-stage water-gas two-phase separation module is controlled to contact the sealing ring in the circumferential groove of the baffle ring above it; Step S5: Repeat steps S3-S4 until deodorization is completed.

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